Table read by downward antidiagonals: T(n,k) is the number of tilings of the n X k grid up to horizontal and vertical reflections by a tile that is fixed under horizontal reflection only.
A368218
Table read by downward antidiagonals: T(n,k) is the number of tilings of the n X k grid up to horizontal and vertical reflections by a tile that is fixed under horizontal reflection only.
Terms
- a(0) =1a(1) =3a(2) =2a(3) =4a(4) =7a(5) =3a(6) =10a(7) =20a(8) =24a(9) =6a(10) =16a(11) =76a(12) =144a(13) =76a(14) =10a(15) =36a(16) =272a(17) =1120a(18) =1056a(19) =288a(20) =20a(21) =64a(22) =1072a(23) =8448a(24) =16576a(25) =8320a(26) =1072a(27) =36a(28) =136a(29) =4160
External references
- oeis: A368218